FWIW, here's a functional sketch based on the '67 Barracuda supplement.
prob the same as aDart and Valiant but I haven't verified.
As quoted above, the replacement colors may be different, especially if its a superceded switch cam. The later switches have the lane signalling feature so may look different. I think I've got a broken one I saved. Can dig it out this weekend if needed.
I was really just interested in how the switch functioned so didn't include Cavity 4 which is for horn.
Also I did not verify with the wires on my '67. Just providing a starting point.